Baiitholomew gommenginger



B. GOMMENGINGER.

Hot-Air Furnace.

No. 100,281. Patented March 1, 1870.

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BARTHOLOMEW GOMMENGINGER, 0E ROCHESTER, NEW YORK.

Letters 'Patent N 100,281, dated March `l, 1870.

i The Schedule referred to in these Letters Patent and making partof the same t l lo all lwhom tt may concern:

Be it known that I, BAuTnoLoMEW GoMMnNGIN- GER, of the city of Rochester, in the county of Monroe, and State of New York, have invented a certain new and improved Draught Arrangement for Hot-Air Furnaces, of which the followingr is a full and exact specification.

Nature of the Invention.

This invention consists of a draught-tine of peculiar form, interposed between the ash-pit and feedingtrough, and partially surrounding the fire-pot, and having a jacket beneath., which distributes the air to -the grate.

It further consists in the employment of snpplementary registers to the draught-flue, openngxinto said tine tloni the inclosed hot-air space. around the furnace, as hereinafter described.

General Description.

ln the drawings- Figure 1 is a perspective View of the lower portion of a furnace provided with my improvement.

Figure 2, a front elevation of the saine.

A represents the fire-pot of the furnace;

B, the ash-pit;

C, the feeding-trough; and

] ),the face-plate or front.

These parts 'are all set in brick-work or in sheet iron easing, in the usual manner.

Between the ash-pit and feeding-trough is situated a draught-tine, E, in the form of an inclosed trough, which has outside a slide-register, a, for admitting the cold air, while inside it preferably extends horizontallyv nearly to the tire-pot, between which and itself it forms an annular space, c, when it turns downward and opens through the top ofthe ash-pit at the front and at the bottom ofthe grate.

At this point is a jacket or flange, G, iig. 2, which projects vertically downward, and extends concentricallyaronml a quarter circle., more or less, iu ti'ont of the grate.

At each end is adeeper projection, b, than the. center g, as clearly shown.

The novel features in' this arrangement are the flue E, incloscd between the ash-pit and feeding-trough, and partially surrounding the lire-pot, so as to receive the. greatest amount of heat on all sides, and the jacket G, which distributes the air thus fed in, in a thin sheet all around the grate.

Located in this peculiar manner, the flue not only receives the heat from the feeding-trough,ashrpit, and

lire-pot, but afree and unobstructed passage is left for the hot air, inclosed by the lbrick walls or sheet-iron casing, to circulate through the spaces c, d, and f, thereby using the maximum of heat to the draught-air before it enters the tire. In ,this manner the air is teredto support the combustion is thoroughly hea-ted,

and does not come in contact with the cold'ar taken inb at the bottom of the furnace, as in ordinary furnaces.

The draught-tine within the brick walls is provided with one or` more supplementary registers I I, whose stems, h h, pass outward, so that theymay be opened or closed at pleasure. I claim a special advantage in this, inasmuch as, at night, the outer register taking in cold air may be closed, and only the heated air of the furnace-space admitted to supply the combustion, lthereby saving much loss when only .sufficient fire is required to sustain the action.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. lhe inclosed flue E and vertical jacket G, when combined together. and arranged as herein described, for the purpose specitied.

2. Specially', .the flue E, located between lthe feedtrough and ash-pit, and surrounding a port-ion ot' the tire-pot., and opening through the top of the ash-pit, and so arranged as to have the free passage-spacel c, d f, in the. manner and for the purpose specified.

3. ,Forming the concentric jacket G with the narrow center g and projecting ends b b, in the manner and for the purpose. specified.

4. The supplementary registers I I, located in the hot-air space ofthe furnace,- when combined with the line E, as herein set forth. `Y

In witness whereof, I have hereunto signed my name in the presence. ot" two subscribing witnesses. f i

- B. GOMMENGIN GER.

Witnesses:

P. R. `Wooncocli,

It. E. OsGooD. 

